Every year we put together a list of our Lifehacker App packs for each operating system. In the spirit of those lists we figured it was time to put together a list for students getting ready for school. Whether you’re on Windows, Mac, Android, or iPhone, we’ve got you covered.

Thanks to Apple's restrictions you can't get a perfect video player that handles all formats and performs with the same processor and battery efficiency as Apple's built-in Videos app. Nevertheless, PlayerXtreme HD does just about everything you could ask for within the confines of iOS' walled garden.

College students have a tough life. Between fitting in ridiculous class assignments and schedules, you also need to hunt down deals on food and drink. We’ve put together our list of the best iPhone apps, but students need a different mobile toolkit to get things done. Here’s what you should load up on your iPhone…

The iPhone's app selection is unparalleled, but it can be frustrating to sift through the thousands of options to find the best. For our third annual Lifehacker Pack for iPhone, we're highlighting the apps that help you stay productive, connected, informed and entertained.

Web/iPhone: CopyPasteCharacter, a handy site we've mentioned previously for easily copying and pasting special characters, has added a whole new bunch of dingbats and characters, and you can now save your favorites as well as easily access special characters on iPhone.

iPhone/Android/Windows Phone 7: OneSchool is a free app that can make your college experience much richer by connecting you to your school's resources and helping you find what you need on or near campus.

iOS: CardFlick is a free app for creating business cards directly on your iPhone or iPod touch. It comes with several themes and sending is as easy as sending an email or just flicking your card to another user's phone. To get started, you just add a photo and enter a little information about yourself so the card can…

Safari, Chrome, and iOS: SendTab is a very simple utility that lets you send a browser tab to another device with one or two clicks. It works in an instant, cross-browser, and even with iPhones and iPads.

iPhone: Who better to ask for dish recommendations than a famous chef? Tap into the trained palates and personal tastes of chefs like Momofuku's David Chang, Le Bernardin's Eric Ripert, and Barbuto's Jonathon Waxman with free restaurant app Chefs Feed.

Web/iOS: There's no shortage of fitness apps in the App Store, even ones that can turn your iPhone into a personal trainer, but many of them cost a couple of bucks and have pretty basic features. Free app Fleetly joins the growing gamification of everything trend to spur you into working out more with a fitness…

iPhone/Android/BlackBerry/Web: Where should you go for a night out without spending too much on drinks? There's an app for that: DrinkOwl, which currently lists over 50,000 drink specials and coupons in over 75 cities.

iOS: If you've used your iPhone camera to take pictures of things you want to remember, you've probably also forgotten about those pictures five minutes later. PhotoMind attempts to solve that problem by adding a reminder setting to your images.

iPhone: There's nothing wrong with the built-in calendar app on your iPhone, but it can be somewhat limiting in the amount of data it lets you see and navigation isn't always perfect. Agenda Calendar cleans up the interface and makes finding what you're looking for a breeze.

Android, iPhone, and Windows Phone 7: PC Monitor is a free app for pretty much any mobile device that gives you a ridiculous amount of control over your Windows or Linux computer. All you need to do is install some simple server software and the app on your phone to get up and running in minutes.

iOS: If you post a lot of status updates, chances are you've found it annoying to have to post to multiple social networks. On top of being a pretty great Twitter app, TweetCaster can mirror your updates over on Facebook so you don't have to post them twice.

iOS doesn't exactly allow for much file browsing, as the file system is pretty locked down, but there are some great apps for management. We love Air Sharing because it supports practically every protocol you'd ever need and works with tons of file types.

iOS: Alfred is a very intelligent robot that can find your next new favorite restaurant after learning where you like to eat now, kind of like a Pandora for restaurants. The free app is a nice alternative to reading through a bunch of reviews, and it cleverly learns your tastes.

iOS: AirPlay is great if you have a Mac or an AppleTV, but if you want your iPhone's music on other devices you're out of luck. AirMusic solves that problem by serving up your iPhone's library on DLNA-compliant devices like the Xbox 360 and PS3, as well as some TVs and set top boxes. You can even stream to Windows…